I don't really trust ADV when it comes to english-dubbing.
The few good dubs ADV have had (i.e. Dai Guard/Golden Boy) are few and far between. Some have already been laid off (Dai Guard's vocal-studio Monster Island is gone). So we're left with the vocals from ISM: the same casting-people who did the infamous EVA english-dubs. Don't know about you, but between EVA and Robotech dubs, I rather listen to Robotech's english-dubs.
Fwiw, the only good english-talent at ADV, imho, is Monica Rial. I like Hillary Haag, also, but she's not as good a vocal-talent as Monica Rial.
I fully doubt ADV will contract Animaze (the people who originally did the english-dubs of Macross-Saga (pre-Animaze name), Macross-Plus, Cowboy Bebop and now Gits-SAC/2nd-Gig).
Also, I will have to deviate from the collective here regarding the old robotech-vocals (macross-saga). They were fine enough back then. The problem was the directing and the script they were using. Yes, even Tony's Hikaru and Reba's Minmae could've turned out better if Macek didn't alter enough of the Macross-dialogues and directed the show that made Macross-Saga more broadcast-"friendly" but yet sound so very corny like we all know about Robotech.